PT2271452E - Milling tool for machining work pieces - Google Patents

Description

1

DESCRIPTION " MACHINERY FOR PARTS MACHINING "

TECHNICAL FIELD OF THE INVENTION The invention relates to a milling machine for machining parts with at least one cutting edge arranged on the milling head in the form of a removable cutting insert which is mounted so as to be able to rotate on a spindle, Y with axial symmetry in the milling head, and wherein the removable cutting insert (2) is arranged in a spigot (9) fitted to the milling head (3).

State of the Art Milling with rotary cutting edges has been a known process for years, but has been used on a small scale. In this case, there is a tool for engagement, the active element of which consists of a rotary circular cutting disc which, during the machining operation, executes by a tensioning process and the inclination of the cutting disc axis a kinetic automatic rotary movement in the direction of the cut. From this rotary movement of the cutting disc, during machining, a new position of the edge with a continuous effect results, with each cut point remaining only a short time in the cutting zone, which implies a low heating of the disk.

A corresponding milling machine is disclosed here, for example, from DD 118 543. In this embodiment there is also provided a stable cutting edge on the milling head, next to a rotating disk, to thereby achieve a specific image of the mill. court. A further prior art embodiment is also disclosed from US 2,885,766, in which there are provided 2 removable cutting inserts, rotatably mounted on the milling head, which are rotatable in the milling head on the axis with axial symmetry that forms. The removable cutting inserts are provided on this milling head according to the state of the art in "U" shaped blanks, so that a two-way retention of the shafts on the milling head can be done in particular. The concept of claim 1 is based on US 2,885,766.

In addition, other embodiments are disclosed, such as those described, for example, in US 5,478,175. In this publication there is disclosed a cutting edge, disposed on a rod in the rear zone, which is arranged in a rotating blind hole in the conveyor of the milling head. An equivalent solution is also disclosed from DE 10 2005 051 695, in which especially the removable cutting insert is secured on a conveyor element and wherein the rotary conveyor is supported on the tool. There the conveying member has an end of the axis coaxial to the Y-axis, which is rotatably guided in a blind bore in the tool. In this known embodiment according to the state of the art it can also be seen that, in particular, the conveyor element can be rotatably driven so that, as a result of the rotational movement of the milling machine, the mechanism provided in the milling head is driven with the cutting disc fixed on the conveyor. A corresponding embodiment is also described in CH 480 120. In this regard, US 2,885,766 discloses to the person skilled in the art a flat surface milling machine whose engagement is limited to flattening surfaces or eliminating uneven surfaces. The flat surface milling machine described herein therefore includes a ring-shaped conveyor along which cut boards are distributed. Each individual cutting plate is thus arranged in the ring by means of a trunnion including a bolt, being rotatable. The trunnion including the stud is disposed in two coaxial holes which face each other, being rotatable. The cutting plates are fitted with an angular position on the conveyor ring so that they can carry out on the surface, with said angular position, preferential planar surface milling with a reduced cutting depth. The trunnion including the stud is engaged therein in the conveyor so that a threaded stud in the conveyor ring secures a circular groove in the stud to hold the stud tightly attached to the studs. In addition, there are lubrication channels for reducing the friction of the bolt in the bushes or holes, the skilled person having indicated to the skilled person that the individual cutting plate is placed on the bolt, below a fixing base, wherein the rotation of the cutting plate occurs exclusively on the outside of the conveyor ring, by securing the bolt including the bushes in the existing holes facing each other.

In these known prior art milling solutions which are equipped with rotary cutting discs, it is disadvantageous that these embodiments have a very expensive manufacture with respect to the rotary, removable cutting insert due to expensive fastening that is required for the removable cutting insert. Thus, all solutions known in the prior art have in common, for example, the characteristic of the rotary, movable cutting insert being able to be changed, that a larger number of operations are required in the milling head, in order to removing the removable cutting insert on the one hand from the milling head, the removable cutting insert 4 itself being otherwise removed from the conveyor member after it is released. It is further disadvantageous in the known solutions that, in particular for the preservation of the rotatable movable cutting inserts, the movable cutting inserts have to be specially preserved to fit the milling head, wherein the rotating supports of the cutting plates milling machines do not allow the combination of planer milling with flat surfaces and holes, which is particularly necessary for irregular milling machines.

The invention relates to the problem of manufacturing a milling head for machining parts with radially rotatable, removable cutting inserts, the adaptation of which is substantially simpler for securing the cutting edges, in particular the process of the cutting discs is substantially simplified, and in that it should also be ensured that, with the milling head next to the milling machine of flat surfaces, it is also possible to drill the material as a whole.

Solution

According to the invention the problem is solved according to the features of claim 1, advantageous forms of the invention are presented in the subsequent claims.

The advantages achieved by the invention result in particular in the detachment of the pin, together with the engagement of the rotatable movable cutting inserts, by obtaining through the conveyor element of the milling head 5 a movable cutting insert rotating in a bearing, which presents the freedom of movement and rotation sufficient to transfer the material during the drilling process on the one hand and to lift the corresponding cuttings on the milling machine on the other. The adaptation of the removable cutting insert is achieved here only by the molding of the milling head in connection with the spigot. In this way it is ensured that the rotating disk, in particular in the case of picking up, has the freedom of rotation sufficient, without remaining the danger of the cutting edges being able to rise from the attachment zone.

Thereby, the removable cutting insert can rotate freely by an allowable tolerance at the free end of a adapted pin in the milling head, which can be released from the fastener base, the movable cutting insert being inserted in / connected to the fastening device for releasing / removing the spigot of the material from the milling head on the one hand from the flat back zone and on the other hand from the front area. Following the loose spindle which forms the rotary axis for the removable cutting insert, it is ensured that by simply removing the spindle the removable cutting insert is released into its bearing, allowing simple removal and dropping of the removable cutting insert from its socket. With this, the spigot is arranged in the drilling hole of the milling head. It is understood that the spigot can be easily pushed from one side so that the corresponding movable cutting insert is released and can be removed from the socket.

According to the invention the spigot has a cylindrical front section for rotatable support of the removable cutting insert and a conical rear zone for attachment to the conveyor element of the milling head. Thus, it is ensured that, on the one hand, the spigot forming an axis of the rigid bearing, as a free end, is supported by means for adhering to the material in the milling head. On the other hand, the cylindrical zone of the spigot especially forms a type of bearing surface for the removable cutting insert.

In another embodiment of the invention the spigot may have a central threaded bore in the conical rear region. This threaded hole may also be especially used, for example to fasten the spigot in the drill hole, but also for example to place a tool, so that with this tool the spigot is removed from the base where it is. In another embodiment of the invention the spigot in the conical rear region combines with the conical zone visible in the bore. In this way, an effective base of passage in the conveyor element of the milling head is prepared.

According to a particularly advantageous presentation of the invention, it may also be envisaged that the post may be constructed as a screw, the front area of the rod being cylindrically constructed for forming the attachment zone of the removable cutting insert and wherein the cylindrical region is secured to the hole, leaning on it. Thereby, the cylindrical portion of the screw rod extends into the material in the milling head and is screwed to a stop, so that the spike-shaped screw forms in the material in the milling head a rigid axle of the bearing. The front area of the screw rod thus forms, as described, a cylindrical axis of the bearing. 7

In this case, the rotary support hole of the removable cutting insert may be a blind hole. It is thus ensured that the removable cutting insert is shown in the front zone so as to thereby surround the entire attachment area of the removable cutting insert. To facilitate the release / removal of the spigot, it may also be provided that the removable cutting insert for the rotatable holder has a cylindrical blind hole with a central aperture through which a tool for passing the securing pin can be passed.

In another embodiment of the removable cutting inserts there may be a recess in the front region. The cavities can be provided for both the front and rear areas. In order to favor the kinetic automatic movement of the removable cutting insert, it is foreseen that the axially symmetrical Y-axis travels the milling head under inclination. With this, the slope may both present a slightly positive slope and a slightly negative slope vis-a-vis the X-axis.

According to a particularly advantageous presentation of the invention, the removable cutting insert may, instead of the material of the notched milling machine, be conjugated with a retainer from its front zone. Therein the freely rotatable, removable cutting insert can be engaged in a device for releasing / removing the spigot from the material of the milling head on the one hand from the flat back zone and on the other hand from the front area, through retainers on the milling head. The retainer includes a screw, the screw head of which forms a front mechanism for the rotary, removable cutting insert.

According to another particularly advantageous presentation of the invention, there is achieved in the sequence of detachment of the pin in connection with the engagement of the rotatable, removable cutting insert through the milling head conveyor member, a removable cutting insert showing movement and the rotation sufficient to, on the one hand, enter the material during the drilling process and, on the other hand, be able to lift the corresponding chip on the milling machine. The simple adaptation of the removable cutting insert is achieved only by molding the milling head in connection with the spigot. It is thus ensured that the rotating disk, especially during picking, has the freedom of rotation sufficient, without the danger that the cutting edges can automatically rise from the clamping zone. The removable cutting insert is freely rotatable by a tolerable tolerance at the free end of a spigot which is fixed and releasable to the milling head and wherein the removable cutting insert is secured to the cutting device. removal of the spigot by effective mechanical connection between the free ends of the spigot and the attachment base of the removable cutting insert. This embodiment guarantees a freely rotatable, removable cutting insert which is supported on the spigot by the effective mechanical connection on the outer side. The effective mechanical connection between the free end of the spigot and the itself of the movable cutting insert takes on a conical shape. Based on this representation the placement and the support of the removable cutting insert is very simple. If the spindle is unscrewed, the removable cutting insert can be separated from the spigot. The attachment of the effective mechanical attachment extends therewith such that the effective conical mechanical attachment preferably extends approximately 9 above the free end half of the post, and respectively of the base of the insert of the removable cutting insert.

According to a purpose of a representation of the invention, the free end of the spigot has a cylindrical zone for rotatable support of the removable cutting insert, which encloses in itself another conical shaped zone, for fixing and for centralizing the head conveyor element of milling. This ensures that there is always a centered center of the spigot in the material on the milling head. In another embodiment of the invention, the spigot is mounted in the rear zone as a screw for clamping the milling head conveyor. The removable cutting insert itself has a conical bore for rotating support, in which a cylindrical section is included. The conical zone as well as the cylindrical zone combine the conical zone with the cylindrical section of the spigot. According to another advantageous embodiment of the invention, the removable cutting insert has a cavity in the front region.

According to another particularly advantageous embodiment of the invention it may be completed with an additional bearing for the rotatable movable cutting insert which is surrounded on one side by the material of the milling head (by the rear zone), the bearing being, on the other hand, completed by the front zone seals on the milling head. The retainer includes a wafer, which is fixed by means of fastening mechanisms, preferably by means of a screw, to the milling head, with a portion of the plate being recessed on the front area of the removable cutting insert. In another advantageous embodiment the insert is preferably arranged in a form on the milling head. From this, a bearing engagement preferably arises in the bearing.

Brief description of the drawings

An exemplary embodiment of the invention is best shown on the basis of Figures 1 to 15; the figures show:

Figure 1 shows a first embodiment of a milling machine according to the invention, wherein the milling machine is shown in side perspective a, in perspective b, in plan c, in view of sectioned / sectional profile d, as well as in FIG. detailed views and; Figure 2, another example of embodiment according to Figure 1, similarly, also in detailed views of a and e; Figure 3, another embodiment according to Figure 1, also in detailed views a and e; Figure 4, another embodiment according to Figure 1, also in detailed views a a e; Figure 5, another embodiment according to Figure 1, also in detailed views a and with a bolt-shaped spigot;

Figure 6 shows a milling machine according to the invention with a negative slope of the spindle axis, also in detailed views a and e;

Figure 7, another embodiment according to Figure 6, also in detailed views a and with a positive slope of the spindle axis; 11

Figure 8, individualized presentation of the spike, also in detailed views a a d;

Figure 9, another embodiment according to Figure 1, also in detailed views a a e;

Figure 10, another embodiment of a milling machine according to the invention, wherein the milling machine is shown in side perspective;

Figure 11, plane of the milling machine, according to Figure 10;

Figure 12, cross-sectional view of the milling machine, according to Figure 10, comprising the corresponding cut lines A / A of Figure 10;

Figure 13, detailed view, likewise in section according to Figure 12;

Figure 14, another embodiment according to the invention, in which the milling machine is shown, also in profile view; and

Figure 15, another presentation exposed, in section, with the retainer.

BEST MODE FOR CARRYING OUT THE INVENTION Figure 1 shows a first embodiment of a milling machine 1 according to the invention, in which the details are respectively distinguished in the profile view a, in perspective view b, in the plane view c, as well as in cross-sectional view d of the milling machine 1. In the detail view there is in particular the arrangement of a removable cutting insert 2 in the milling head 3, in the exposed section 12. The milling machine 1 is characterized by the machining of parts, the milling head 3 of the milling machine 1 having at least one removable cutting insert 2 disposed radially on a Y-axis with axial symmetry 4, on the milling head 2, it being rotatable . As can be distinguished mainly from the perspective presentation of Figure 1b, the Z-axis forms the axis of rotation 5 of the milling machine 1, the X-axis representing the cutting horizon, with reference 6.

It is understood in and of itself that the Y-axis 4 is axially symmetrical in the milling head 3, the milling head 3 being displaced to the axis of rotation 5. As is to be distinguished especially from the joint presentation of Figures 1c, , the removable cutting insert 2 is freely rotatable by an allowable tolerance 7 on the free end 8 of a pin 9 fixed on the milling head 2 through a fixing base, and can be released. The removable cutting insert 2, freely rotatably mounted, is secured here in the device for releasing / removing the spigot 9 from the material in the milling head 2, on the one hand from the flat back region 10 and, on the other hand from the front zone 11. This should be distinguished from Figure 1, where it is clear that the front zone 11 of the removable cutting insert 2 is covered by the material 12 of the milling head 3. It should also be distinguished from corresponding in the cross-sectional view of Figure 1, in which, especially in the lower projection 13 of the material in the milling head 12, the front zone 11 of the movable cutting insert 2 protrudes. It is also clear from Figure 1 that the cutting insert 2, as supported in a thrust bearing, so that it is suitable through the free end 8 of the spigot 9, which attaches to the removable cutting insert 2 in the central hole 14, as well as through the specific molding of the material 12, which spreads the removable cutting insert 2 rotatable by the front zone 11, in connection with the backpiece 15.

As can be seen from Figure 1, the spigot 9 is arranged in a drill hole 16 in the milling head 2. The spigot 9, as shown in Figure 1a and in the individual view of Figures 8a ad, has a cylindrical front zone 17 , suitable for rotary support of the removable cutting insert 2. This cylindrical zone 17 integrates, for the removable cutting insert 2, a kind of bearing in which the removable cutting insert 2 is freely rotatable. In the rear zone, the spigot 9 comprises a conical portion 18 for securing the milling head 3 in the material of the milling head 12. The spigot 9 may be conjugated in the back taper zone 18 with a conical zone existing in the drill hole 16, so that on the basis of the effective mechanical connection of the spigot 9, a rigid shaft for the removable cutting insert 2 is formed by means of adhesion. With this, it can exist mainly in the area of passage from the conical section to the cylindrical section in the spigot 9, for example a circular frame 19.

It will be understood that when the removable cutting insert 2, as shown in Figures 1a and 1a, is to be separated from the milling head 2, the spigot 9 can simply be withdrawn or pushed out of the bevelled area, so that the spigot 9 release the cylindrical section 17 in the central hole 14 of the removable cutting insert 2, allowing the removable cutting insert 2 to be withdrawn from the bearing in the milling material 12. If a new removable cutting insert 2 is introduced, then the cutting insert The movable cut-out 2 may be inserted into the bearing clearance, the pin 9 having to be again pushed / pressed towards the conical portion. The embodiment according to Figures 2a and 1e is distinguished by the fact that the spigot 9 has a threaded bore 20 in the back taper zone 18. This threaded bore 20 can be especially used so that no drawing tool shown can be placed in the spigot 9. It may also be thought that no tightening screw / tensioning screw can rotate in the threaded bore 20, if it secures the rear zone 18 of the spigot in the wall of the bore hole 16.

Figures 3a-a show a variant of a removable cutting insert 2, wherein the removable cutting insert 2 has a blind bore 21 for rotating cylinder support. Based on this representation a removable cutting insert 2 with a closed front zone 11 is shown, as shown in Figures 3a + b. A further embodiment of the variant according to Figure 3 is shown in Figure 4, wherein the blind bore 21 is still seen with a central aperture 22, through which, as shown, by way of example of embodiment, in Figure 1 , a tool may also be provided to cause the spike 9 to move backward.

Also by way of example of embodiment, shown in Figure 5a to e, there is shown a milling head 3, wherein the spigot 9 takes the form of a screw 23. With this, the front section 24 of the screw rod 23, for fastening of removable cutting insert 2 is also cylindrical. The cylindrical zone 24 is secured in an orifice 16, wherein the rear section 25 of the screw 23 takes the form of a threaded hole, so that the screw 23 is placed in the hole 16. The collar / collar 26 of the front zone 24 cylindrical shape to the stop 27 in the hole 16. In this way, a rigid shaft for the removable cutting insert 2, which can be rotatable, is also achieved. As can be seen from Figure 5e, the screw head 28 is constructed so as to extend the removable cutting insert 2. It may also be thought that, based on the bearing fit, it is not possible to release the screw, but rather loosen the hexagonal bolt inside, where the screw head 28 could fail.

Figures 6 and 7 respectively present two exemplary embodiments, wherein the axial symmetry Y-axis 4, constructed in the milling head 3, moves with an inclination. This is shown for example in Figure 6a and, the embodiment, wherein the slope has a positive slope towards the X-axis 6 and wherein Figure 7a ae shows a negative slope towards the X-axis 6. The removable cutting insert 2 shown in accordance with Figures 6 and 7 is to be driven so that the removable cutting insert 2 according to Figure 7 has a cavity 29, in which Figure 6 shows a removable cutting insert 2 , which has a cavity 29 in its front and rear zones.

According to a particularly advantageous embodiment of the invention, shown in Figure 9, the removable cutting insert 2 may, instead of the material of the slotted milling machine 12, be conjugated with a retainer 30 from its front zone 11. Thereby the insert The removable cutting element 2 with free rotation can be engaged in a device for releasing / removing the spigot 9, from the material 12 of the milling head 3, on the one hand from the flat back region 10 and, on the other hand, from the front zone 11, through retainers 30 on the milling head. The retainer 30 includes a screw 31, the screw head 32 forming a front mechanism for the rotatable movable cutting insert 2.

Figures 10, 11, 12 and 13 present an additional embodiment of a Milling Machine 1.1 for machining parts, with at least one cutting edge 3.1 arranged radially on the milling head 2.1, in the form of a cutting edge of cutting insert removable on a Y-axis 4.1 with axial symmetry in the milling head 2.1, and can be rotatable. From the joint presentation of Figures 10 to 13 the Z-axis forms the axis of rotation 5.1 of milling machine 1.1, with the X-axis corresponding to the cut-off horizon, marked 6.1. It is understood in itself that the Y-axis exists with axial symmetry in the milling head 2.1, the milling head being displaced to the axis of rotation 5.1.

As is to be distinguished especially from the joint presentation of Figures 10 to 13, the removable cutting insert 3.1 is freely rotatable by a tolerable tolerance 7.1 on the free end 8.1 of a pin 9.1 fixed on the milling head 2.1 through a base and can be released. The freely rotatable movable cutting insert 3.1 is secured here in the spindle release / removal device 9.1, wherein the movable cutting insert 3.1 and the free end 8.1 of the spindle are secured by effective mechanical connection between the free end 8.1 of the spigot 9.1 and the base of the bearing 10.1 with removable cutting insert 3.1. 17

This is especially clear in Figures 12 and 13, in which especially the effective mechanical connection of the bearing, there appears in the form of a bearing. The effective mechanical connection between the free ends 8.1 of the spigot 9.1 and the base of the bearing 10.1 with removable cutting insert 3.1 assumes a conical shape. The effective mechanical connection preferably extends above the free end half 8.1 of the spigot 9.1 and, respectively, of the base of the spindle 10.1 with removable cutting insert 3.1. The free end 8.1 of the spigot 9.1 has a cylindrical section 11.1 for rotatable support of the removable cutting insert 3.1, where conical areas 12.1 are attached for attachment and for centering on the conveyor element of the milling head 2.1. The spigot 9.1 is then rotated on the milling head material 2.1, in particular rotating the conical zone 11.1 of the spigot 9.1 in the conical zone of the material in the milling head, so that the free end 8.1 of the spigot 9.1 centers on the axis of rotation of the spindle -Y 4.1.

As can be seen from Figures 12 and 13, the spigot 9.1 is in the rear region 13.1 in the form of a screw, for attachment to the conveyor element of the milling head 2.1. For attachment of the spigot 9.1 there may for example be an inner hexagonal screw 14.1 in the front zone of the spigot 9.1, as can be seen for example in Figure 10. In a drill hole 15.1 in the material in the milling head can also be used, for example, for example, an internal hexagonal screw at the rear end of the spigot 9.1 so that the spigot 9.1 can be withdrawn from the rear zone of the material in the milling head to release / release and thereby move the removable cutting insert 3.1 . 18

In order to realize the effective mechanical connection, the removable cutting insert 3.1 also has a conical hole 16.1 for rotating support, in which a corresponding cylindrical section 17.1 is included. According to another advantageous representation the removable cutting insert 3.1 has a cavity 18.1 in the front zone, so that the cuttings can be controlled by the removable cutting insert 3.1.

According to a particular embodiment of the invention, there is shown in Figures 14 and 15, and additionally in the front zone of the removable cutting insert 3.1 a retainer 19.1 which mainly seals the front zone of the removable cutting insert 3.1. A bearing is formed on the back of the removable cutting insert 3.1. The retainer 19.1 comprises a insert which, by means of a fastening mechanism 20.1, preferably a screw, is attached to the milling head 2.1. The insert may, for example, assume a shape 21.1 on the milling head 2.1, as shown or arranged, for example, in Figure 10. As can be distinguished from the embodiment of Figures 14 and 15, the retainer 19 , here assuming the disc shape on the front side, which is fixed by fastening elements, preferably a screw 20.1. The disk-shaped member takes the form 21.1 to be secured to the zone of the removable cutting insert 3.1. With this, safety is achieved with respect to the removable cutting insert 3.1, so that the removal / release process is thereby prevented.

List of references 01 Milling machine 02 Removable cutting insert 19

Milling head

Y-Axis

Z-Axis

X axis

Tolerance

Free end

Spike

Removable cutting insert / rear area Removable cutting insert / front area Material milling head Lower boss

Removable cutting insert from center hole

Back piece for removable cutting insert

Drilling hole

Cylindrical section

Conical section

Frame

Threaded hole

Blind hole

Central opening

Screw

Front section

Rear section

Borders / Paste

Stop

Bolt Head Bolt Holder Screw

Milling head

Milling head Removable cutting insert

Removable cutting insert of the Y-axis of rotation Spindle of the Z-axis rotation 20

6.1 cutting horizon of the X-axis 7.1 Permissible tolerance 8.1 Free end 9.1 Spigot 10.1 Bearing base 11.1 Cylindrical section 12.1 Conical section 13.1 Rear section 14.1 Inner hexagon screw 15.1 Orifice 16.1 Taper hole 17.1 Cylindrical hole 18.1 Cavity 19.1 Retainer 20.1 fastening elements , preferably a screw 21.1 Shape

Lisbon, November 14, 2012

Claims (15)

Milling machine (1) for machining parts, with at least one cutting edge arranged on the milling head (3), in the form of a removable cutting insert (2), which is mounted so that it can rotate about a Y-axis (4) with axial symmetry in the milling head (3), and wherein the removable cutting insert (2), subject to the tolerance (7) allowed, is arranged in a spigot (9) fitted to the milling head (3), being able to rotate freely, wherein the removable cutting insert (2), freely rotatably mounted, is engaged in or surrounded by the material (12) of the milling head (3) of the rear zone (10) and, on the other hand, from the front zone (11), preventing the pin (9) from loosening, characterized in that the pin (9) comprises a cylindrical front section rotatable support of the removable cutting insert (2) and a conical section (18) for attachment to the material (12) of the head (3), wherein the rear section (18) is loosely disposed below a fixing base in the drilling hole (16) of the milling head (3), and the front section (17) of the post ( 9) forming a free end (8) forms a bearing for the removable cutting insert (2). Milling machine according to claim 1, characterized in that the post (9) comprises in the conical section (18) a central threaded hole (20). 2 Milling machine according to claim 2, characterized in that the spigot (9) joins in the conical rear section (18) with a conical zone projected in the hole (16). Milling machine according to Claims 1 to 3, characterized in that the spigot (9) is provided as a screw (23), the front section (24) of the rod for forming the support structure of the removable cutting insert ( 2) is cylindrical and wherein the cylindrical section (24) is secured to and biased in the hole (20). Milling machine according to claim 4, characterized in that the removable cutting insert (2) for the rotating support has a cylindrical blind hole (21). Milling machine according to claim 5, characterized in that the removable cutting insert (2) for the rotating support has a cylindrical blind hole (21) with a central aperture (22). Milling machine according to claim 6, characterized in that the removable cutting insert (2) has a cavity (29) in the front side (11). Milling machine according to claim 7, characterized in that the removable cutting insert (2) has, respectively, a cavity (29) in its front side (11) and its rear side (10). 3 Milling machine according to one or more of the claims 1 to 8, characterized in that the freely rotatably movable cutting insert (2) is fitted in the material (12) of the milling head (3) (10) and, on the other hand, from the front zone (11), by means of a retainer (30) visible on the milling head, preventing the pin ) is released. Milling machine according to claim 09, characterized in that the retainer (30) comprises a screw (31), the screw head (32) of which forms a mechanism from the front side for the removable cutting insert (2) , rotating. Milling machine according to claim 1, characterized in that the removable cutting insert (3.1), mounted in a freely rotatable manner and subjected to the permitted tolerance (7.1), is mounted to the free end (8.1) of a spigot (9.1) secured to the milling head (2.1) and secured to a clamping mechanism which prevents it from releasing from the spigot (9.1) by a positive connection between the free end (8.1) and the spigot (9.1) and the base of the bearing (10.1) with removable cutting insert (3.1). Milling machine according to claim 11, characterized in that the removable cutting insert (3.1) has a conical shape between the free end (8.1) of the post (9.1) and the base of the bearing (10.1) of the insert removable cutout (3.1). Milling machine according to claim 12, characterized in that the effective mechanical connection extends respectively on the half of the free ends (8.1) of the spigot (9.1) and, respectively, the base of the insert (10.1) of the insert with a removable cutout (3.1). Milling machine according to claim 13, characterized in that the spigot (9.1) is shown in the rear section (13.1) as a screw, for fixing to the milling head support material (2.1). A milling machine according to one or more of the claims 1 to 14, characterized in that the removable cutting insert, mounted in such a way as to be able to rotate freely, engages retainers (19.1) from the front side by means of a milling head ( 2.1). Lisbon, November 14, 2012